Table 5. Mean percentage of European ancestry segregated by genotype of rs231778.

Genotype	AA	AG or GG	AA, AG, or GG
Case	0.172 (0.0997) N = 240 [246]	0.114 (0.062) N = 26 [27]	0.166 (0.098) N = 266 [273]
Control	0.146 (0.052) N = 67 [75]	0.169 (0.078) N = 14 [18]	0.150 (0.057) N = 81 [93]
Total	0.166 (0.092) N = 307 [321]	0.133 (0.072) N = 40 [45]	0.162 (0.090) N = 347 [366]

This table provides data for the 347 samples with complete admixture and rs231778 genotyping data. Standard error is provided in parenthesis. Brackets indicate frequency counts used in determining association of the rs231778 G allele with rheumatoid arthritis among 366 samples, as described in the text.